I just fed my spotted a small weanling rat (a bit larger than she normally gets, but nothing in between that size and a mouse was available, so I went with the larger option) and she seems to have a lot of moisture on her body as though she is sweating. Is this normal? I know it's a lot of effort for them to eat and digest food - with the whole flip-top head thing that they do - but just hoping the rat wasn't too big for her.